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sgb_pal_trn: MACRO
db (SGB_PAL_TRN << 3) + 1
ds 15
ENDM
sgb_mlt_req: MACRO
db (SGB_MLT_REG << 3) + 1
db \1 - 1
ds 14
ENDM
sgb_chr_trn: MACRO
db (SGB_CHR_TRN << 3) + 1
db \1 + (\2 << 1)
ds 14
ENDM
sgb_pct_trn: MACRO
db (SGB_PCT_TRN << 3) + 1
ds 15
ENDM
sgb_mask_en: MACRO
db (SGB_MASK_EN << 3) + 1
db \1
ds 14
ENDM
sgb_data_snd: MACRO
db (SGB_DATA_SND << 3) + 1
dw \1 ; address
db \2 ; bank
db \3 ; length (1-11)
ENDM
PalTrnPacket: sgb_pal_trn
MltReq1Packet: sgb_mlt_req 1
MltReq2Packet: sgb_mlt_req 2
ChrTrnPacket: sgb_chr_trn 0, 0
PctTrnPacket: sgb_pct_trn
MaskEnFreezePacket: sgb_mask_en 1
MaskEnCancelPacket: sgb_mask_en 0
; These are packets containing SNES code.
; This set of packets is found in several Japanese SGB-compatible titles.
; It appears to be part of NCL's SGB devkit.
DataSndPacket1:
sgb_data_snd $085d, $0, 11
db $8c ; cpx #$8c (2)
db $d0, $f4 ; bne -$0c
db $60 ; rts
ds 7
DataSndPacket2:
sgb_data_snd $0852, $0, 11
db $a9, $e7 ; lda #$e7
db $9f, $01, $c0, $7e ; sta $7ec001, x
db $e8 ; inx
db $e8 ; inx
db $e8 ; inx
db $e8 ; inx
db $e0 ; cpx #$8c (1)
DataSndPacket3:
sgb_data_snd $0847, $0, 11
db $c4 ; cmp #$c4 (2)
db $d0, $16 ; bne +$16
db $a5 ; lda dp
db $cb ; wai
db $c9, $05 ; cmp #$05
db $d0, $10 ; bne +$10
db $a2, $28 ; ldx #$28
DataSndPacket4:
sgb_data_snd $083c, $0, 11
db $f0, $12 ; beq +$12
db $a5 ; lda dp
db $c9, $c9 ; cmp #$c9
db $c8 ; iny
db $d0, $1c ; bne +$1c
db $a5 ; lda dp
db $ca ; dex
db $c9 ; cmp #$c4 (1)
DataSndPacket5:
sgb_data_snd $0831, $0, 11
dbw $0c, $caa5 ; tsb $caa5
db $c9, $7e ; cmp #$7e
db $d0, $06 ; bne +$06
db $a5 ; lda dp
db $cb ; wai
db $c9, $7e ; cmp #$7e
DataSndPacket6:
sgb_data_snd $0826, $0, 11
db $39 ; bne +$39 (2)
dbw $cd, $0c48 ; cmp $0c48
db $d0, $34 ; bne +$34
db $a5 ; lda dp
db $c9, $c9 ; cmp #$c9
db $80, $d0 ; bra -$30
DataSndPacket7:
sgb_data_snd $081b, $0, 11
db $ea ; nop
db $ea ; nop
db $ea ; nop
db $ea ; nop
db $ea ; nop
; $0820:
db $a9, $01 ; lda #01
dbw $cd, $0c4f ; cmp $c4f
db $d0 ; bne +$39 (1)
DataSndPacket8:
sgb_data_snd $0810, $0, 11
dbw $4c, $0820 ; jmp $0820
db $ea ; nop
db $ea ; nop
db $ea ; nop
db $ea ; nop
db $ea ; nop
db $60 ; rts
db $ea ; nop
db $ea ; nop
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